ac motor speed control circuit with triac

Ngày tải lên: 18/12/2013, 22:06

... electSpeed Duty ratio VSWT Aero dynamical / Mechanical unit MPPT LPPT Operator Controller speed d Control strategy VSWT Control unit VSWT Electrical unit Fig. 1. Control concept of VSWT with ... controller in combination with two optimum wind turbines power/torque versus speed characteristics. Two control loops: inner feed forward current control loop and outer voltage control closed loop ... power in above rated wind speeds. This control acts directly upon an additional hydraulic system and is very important to protect the blades from breaking. The speed control algorithm serves...

Ngày tải lên: 03/01/2014, 19:15

... DC Motor with Tachometer. The factory specifications are shown in Table 1. Mechatronics Kevin Craig DC Motor / Tachometer Closed-Loop Speed Control System 8 In the early days of analog control, ... Mechatronics Kevin Craig DC Motor / Tachometer Closed-Loop Speed Control System 21 Table 1. Specifications of the Honeywell 22VM51-020-5 DC Motor with Tachometer Motor Characteristics Units Values ... root-locus domain. Mechatronics Kevin Craig DC Motor / Tachometer Closed-Loop Speed Control System 24 Mechatronics DC Motor / Tachometer Closed-Loop Speed Control System 1. Introduction This...

Ngày tải lên: 25/01/2014, 13:20

Ngày tải lên: 12/09/2013, 22:38

Ngày tải lên: 15/10/2013, 16:10

Ngày tải lên: 17/12/2013, 14:15

Ngày tải lên: 28/12/2013, 22:07

... . 1 Speed Control TM ô SPC Gas Springs, cushioned 2486.12. FIBRO SPC Gas Springs Speed Control TM ô are designed to reduce or eliminate the sheet metal retainer bounce back which is ... replace all gas springs with SPC gas springs Option 2 – corner solution (see below) SPC 2480.12./13. or 2484.12./13. LCF SPC Braking distance (~ 30 mm) *At room temperature with free airow Speed ... unit of time stroke in mm time in s sheet metal retainer without SPC sheet metal retainer with SPC SPC reduces speed to 0.4 m/s press speed 1.0 m/s Strokes per minute, depending on stroke travel,...

Ngày tải lên: 22/01/2014, 02:20

Ngày tải lên: 26/01/2014, 07:20

... used with PMAMs with either sinusoidal or nonsinusoidal back emf waveforms. Machines with sinusoidal back emfs may be controlled so as to achieve nearly con- stant torque; however, machines with ... machine current, the torque may be controlled with the same band- width as to which the stator currents are controlled. In fact, it is often the case that for practical purposes, the torque control ... structure of the controls Figure 14.1-1. Permanent-magnet ac motor drive. Electrical System Command Signal Power Converter Control PM AM Mechanical System Sensors 566 PERMANENT-MAGNET AC MOTOR DRIVES ...

Ngày tải lên: 16/02/2014, 18:54

Ngày tải lên: 16/03/2014, 12:20

... approaches have been suggested. Assume that a controller K(s) has been designed for a plant with a model G(s), and denote a reduced-order controller by K r (s). The configuration with K(s) replaced ... classical feedback diagram which so often opened control engineering courses was replaced by a less intuitively obvious diagram. Also it 1.3 Coprime Factorisation and Stabilising Controllers ... an unstable system. Feedback control techniques may reduce the influence generated by uncertainties and achieve desirable performance. However, an inadequate feedback controller may lead to an...

Ngày tải lên: 08/04/2014, 10:27

... positioned across the body with a neutral position in line with the sternum. During movements in this workspace subjects spent at least 17% of each move- ment with medium levels of EMG activity. ... citation purposes) ences in accuracy across low and control/ high functioning subjects on a continuous tracking task, as well as move- ment speed metric for target acquisition task. Low- medium ... separately with the UniTherapy software. Stroke subjects with hemiparesis and able-bodied subjects completed tracking activities with the devices in different positions. We quantify motor performance across...

Ngày tải lên: 19/06/2014, 10:20

... be initialized, per- haps with a high impedance controller to constrain errors. Stability of the coupled human-robot system With the control law of the robot and the motor adapta- tion dynamics ... Guide device during reaching exercise with an error-based learning law in which the error was the difference between the actual reaching veloc- ity and a desired, normative reaching velocity [29]. ... the patient's interaction forces with the Lokomat [19]. The main conceptual advantage of the current approach compared to these pre- vious approaches is that the controller developed here...

Ngày tải lên: 19/06/2014, 10:20

... call Algorithm 2: Proposed CAC policy. 3.2. Proposed CAC Scheme. Proposed CAC scheme handles the nonprioritized and prioritized calls separately. Firstly, when the proposed CAC scheme admits both traffictypesof calls ... distributed with mean 1/μ f n 1 . The channel occupancy time μ −1 1 also is exponentially distributed with means 1/(μ dr 1 + μ r 1 ). 3. Call Admission Scheme Proposed CAC policy uses (CS) access ... probability. In the literature, CAC has been studied widely and several CAC schemes were proposed [4–12]. Priority-based CAC schemes have also been proposed to provide the handoff calls with lower dropping...

Ngày tải lên: 20/06/2014, 22:20

... line traces of the calibration grating with the step height equal to 25 nm. At a constant speed of 30 àm/s (a), with a dynamic control (b), and with a dynamic control and at a variable speed ... As a result, the speed of a closed-loop control system (that is, without loss of surface) is determined by the time constant 0 0 i G K τ . Feedback speed, the speed of the actuator, is limited ... control [1, 2]. Let us find the maximum scan speed without loss of surface. The transient response of the loop control to a capacitive displacement sensor output (if the high-frequency pole...

Ngày tải lên: 21/06/2014, 17:20

... 2.7 Remark 2.5. The control ukLkxk is a feedback control of the system. Definition 2.6. System 1.1 is said to be globally exponentially stabilizable at x  0 by means of the feedback law 2.1 ... feedback stability for non-linear uncertain control systems,” International Journal of Control, vol. 74, no. 6, pp. 547–551, 2001. 9 F. Alabau and V. Komornik, “Boundary observability, controllability, ... Banach Spaces,American Mathematical Society, Providence, RI, USA, 1971. 26 L. Berezansky and E. Braverman, “Exponential stability of difference equations with several delays: recursive approach,”...

Ngày tải lên: 21/06/2014, 20:20

... constant and L and G are functions with continuous first and second partial derivatives with respect to all of their arguments. The necessary conditions for this q-optimal control are ∇ q λ  qx   q −α 0 ∇ q ∂L ∂∇ q y  q α 0 1 x   q −α 0 x   ... derivative approach is followed. Acknowledgment This work is partially supported by the Scientific and Technical Research Council of Turkey. References 1 J. F. Rosenblueth, “Systems with time delay ... variational approach,” IMA Journal of Mathematical Control and Information, vol. 5, no. 2, pp. 125–145, 1988. 2 L. C. Young, Lectures on the Calculus of Variations and Optimal Control Theory,...

Ngày tải lên: 21/06/2014, 20:20

... medi- CMOS sensor Sensor board FPGA board Interface board FPGA USB interface PC Control 100 bits Control 8bits EEPROM prog. FPGA Figure 4: High -speed camera system principle. Lossy compression 15 ... approach is well adapted to the context of real- time high -speed image compression. Likewise, in order to implement real-time marker extrac- tion algorithms which are compatible with high -speed ... present the full high -speed smart camera architecture, and in particular the interface choice dedicated to high -speed video data transfer. 2.1. Image acquisition using a high -speed CMOS sensor Nowadays,...

Ngày tải lên: 22/06/2014, 22:20

Ngày tải lên: 29/06/2014, 09:20